diff options
| author |   Jani Nikula <jani.nikula@intel.com> | 2021-09-01 21:34:01 +0530 |
|---|---|---|
| committer |   Imre Deak <imre.deak@intel.com> | 2021-09-02 15:42:50 +0300 |
| commit | bc41f059a080e487c235b539f1e5cdbf605aba9f (patch) | |
| tree | 0485e13cb5d09ce7c00628bf94b9a468e931fb3c /drivers/gpu | |
| parent | drm/i915/dp: fix EHL/JSL max source rates calculation (diff) | |
drm/i915/dp: fix DG1 and RKL max source rates
Combo phy is limited to 5.4 GHz on low-voltage SKUs, but both eDP and DP
can do 8.1 GHz on combo phy.
Bspec: 49182, 49205, 49202
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210901160402.24816-5-animesh.manna@intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 5aabd8ec1015..3fe1158706d5 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -325,6 +325,18 @@ static int ehl_max_source_rate(struct intel_dp *intel_dp) return 810000; } +static int dg1_max_source_rate(struct intel_dp *intel_dp) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); + enum phy phy = intel_port_to_phy(i915, dig_port->base.port); + + if (intel_phy_is_combo(i915, phy) && is_low_voltage_sku(i915, phy)) + return 540000; + + return 810000; +} + static void intel_dp_set_source_rates(struct intel_dp *intel_dp) { @@ -360,6 +372,8 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp) size = ARRAY_SIZE(icl_rates); if (IS_DG2(dev_priv)) max_rate = dg2_max_source_rate(intel_dp); + else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) + max_rate = dg1_max_source_rate(intel_dp); else if (IS_JSL_EHL(dev_priv)) max_rate = ehl_max_source_rate(intel_dp); else |